Coburn, normally mild-mannered, said it was a "coward's way out" that horses who don't run the other two Triple Crown races come in fresh and win this.

"It's all or nothing. It's not fair to these horses that are running their guts out. This is a cowards' way out," Coburn said. "If you've got a horse that earns points, that runs in the Kentucky Derby, those horses should be the only ones who should run in all three races."